Roof Preparation; Opening Requirements; Roof Vent Removal; New Opening - Dometic DuraSea Installation & Operation Manual

DuraSea Rooftop Installation & Operations Manual
R P
OOF REPARATION
O R
PENING EQUIREMENTS
Before preparing the ceiling opening, read all of the following instructions before beginning the installation.
1. Disconnect 120 VAC power cord and the positive (+) 12 VDC terminal at the supply battery to avoid shock hazard.
WARNING:
SHOCK HAZARD. There may be electrical wiring between the roof and the ceiling. Disconnect 120 VAC power cord and
the positive (+) 12 VDC terminal at the supply battery. Failure to follow this instruction may create a shock hazard
causing death or severe personal injury.
2. If an existing roof vent opening will not be used a 14.25" x 14.25" (± 1/8") or 362 x 362 mm (±3 mm) opening must be
cut through the roof and ceiling of the boat. This opening must be located between the roof reinforcing members.
R V
OOF ENT
1. Unscrew and remove the roof vent.
2. Remove all caulking compound around opening.
3. Seal all screw holes and seams where the roof gasket will be located. Use a good grade of all weather sealant.
4. If the opening exceeds 14.375" x 14.375" or 366 x 366 mm, it will be necessary to re-size the opening to 14.25" x
14.25" (± 1/8") or 362 x 362 mm (±3 mm) .
5. If the opening is less than 14.125" x 14.125" or 359 x 359 mm, it must be enlarged to 14.25" x 14.25" (± 1/8") or 362 x
362 mm (±3 mm).
N O
EW PENING
(
INSTALLATION OTHER THAN VENT OPENING
1. Mark a 14.25" x 14.25" (± 1/8") or 362 x 362 mm (±3 mm) square on the roof and carefully cut the opening.
2. Using the roof opening as a guide, cut the matching hole in the ceiling.
3. The opening created must be framed to provide adequate support and prevent air from being drawn from the roof
cavity. Framing stock of 0.75" or 19 mm or more in thickness must be used. Remember to provide an entrance hole for
power supplies at the front of the opening. See Figure 3.
NOTE:
PROPERTY DAMAGE HAZARD. It is the responsibility of the installer of this system to ensure structural integrity of
the boat roof. Never create a low spot on the roof where water will collect. Water standing around the unit may leak
into the interior causing damage to the product and the boat.
Figure 3: Framing The Opening
L-3075 ENGLISH
R
EMOVAL
)

Roof Preparation

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